Machine for attaching wires to metallic studs.



H. H. CUMMINGS & A. M. ENGLISH.

MACHINE FOR ATTAGHING WIRES. T0 METALLIG STUDS.

APPLICATION FILED DEC. 26, 1912. 1,070,327, Patented Aug. 12,1913.

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H. H. CUMMINGS & A. M. ENGLISH.

MACHINE FOB. ATTAGHING WIRES T0 METALLIC STUDS.

APPLICATION FILED DBO. 26, 1912. 1 07Q 32'7 Patented Aug. 12, 1913.

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Patented Aug. 12,1913.

APPLICATION FILED D110. 26, 1912'.

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MACHINE FOR ATTAGHING WIRES T0 METALLIC STUDS.

H. H. CUMMINGS & A. M. ENGLISH.

MACHINE FOR ATTAGHING WIRES TO METALLIC STUDS.

APPLICATION FILED DEC. 26, 1912.

5 SHEETS-SHEET 4.

H. H. CUMMINGS & A. M. ENGLISH.

MACHINE FOR ATTACHING WIRES T0 METALLIC STUDS.

APPLICATION IEILED DEC. 26, 1912.

1,070,327, Patented Aug 12, 1913.

5 SHEETSSHEBT 5.

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s are HENRY H. CUMMINGS, OF NEWTON HIGHLANDS, AND ANALDO M. ENGLISH, OF

BOSTON, MASSACHUSETTS, ASSIGNORS TO PENN METAL COMPANY, A CORPORA- TION OF MASSACHUSETTS.

MACHINE FOB ATTACHING WIRES TO METALLIC STUDS.

To all whom it may concern Be it known that we, HENRY H. CUM- MINGS, of Newton Highlands, in the county of Norfolk, and ANALoo M. ENGLISH, of Boston, in the county of Suffolk, both in the State of Massachusetts, have invented certain new and useful Improvements in Machines for ittaching \Vires to Metallic Studs, of which the following is a specification, reference being had to the accompanying drawings, forming part thereof.

This invention has reference to improvements in machines for securing or attaching wire fastening members to sheet-metal arti cles and particularly to sheet-metal building studs.

The object of the invention is to so construct a machine of this nature that a sheetmetal article having a crosssectional conformation which the machine is adapted to receive may intermittently be fed through the machine, may be punched to provide wire receiving perforations, may at one step in the operation be supplied with a wire fastener passed in one direction through one of said perforations and having the end of said wire returned through another of said perforations and bent against the web of material, between said perforations.

Uther objects of the invention will appear from the following description.

The invention consists in such novel features of construction and combination of parts as shall hereinafter be more fully described and pointed out in the claims.

Referring to the drawings,-Fignre 1 represents aplan view, partly in section, of a machine embodying our invention. Fig. 2 represents a side elevation, partly in section, of the upper portion of same. Fig. 3 represents an enlarged fragmentary sectional view, partly in elevation, on the line 33 of Fig. 1 looking toward the left hand from said line. Fig. & represents a fragmentary sectional view on the line 11 of Fig. 3. Fig. 5 represents an enlarged fragmentary sectional view, partly in elevation on the line 5 5 of Fig. 1. Fig. 6 represents a sectional view, with parts broken away, of the mechanism for operating the wire cutter, and is taken on the line 33 of Fig. 1 look- Specification of Letters Patent.

Application filed December 26, 1912.

Patented. Aug. 12,1913.

Serial No. 738,615.

ing in the direction indicated by the arrow of said line. Figs. 7, S and 9 represent enlarged fragmentary sectional views on the line of the wire LU of Fig. 1, with the machine in different stages of its operation. Fig. 10 represents a fragmentary plan view, partly in section of a portion of the ma chine showing the punching and wire inserting steps. Fig. 11 represents a'plan View of a detail of the die actuator, hereinafter described. Fig. 12 represents a view in perspective of the die hereinafter described. Fig. 13 represents a fragmentary sectional view on the line 1313 of Fig. 2. Fig. 14: represents a fragmentary sectional view on the line l41 t of Fig. 13. Figs. 15 and 16 represent fragmentary plan views, partly in section showing the operation of securing the bent wire.

Like reference characters designate corresponding parts throughout.

In the form of the machine that is repre sented in the drawings, the main shaftlO, which is journaled in bearings 11, on the frame 12, is driven through any suitable clutch mechanism as 13 by the pulley 14:. At each side of said frame and fast to the shaft 10 are eccentrics 15 and formed on the top of said frame are guides 16 which support and guide a. reciprocating table 17. The latter is operated by the rotation of said main shaft through connecting rods 18, the rear ends of which are journaled on the eccentrics 15, and the forward ends are journaled on studs 19 which project from the ends of said table. On said table is bolted a punch holder 20 which carries punches 21, 22 and 23. Near the center of said table is bolted a punch holder 2% which carries a punch and stock retainer 25. Also on said table and to the right of said punch and stock retainer is bolted a wire conveying and inserting member 26, hereinafter described. All of said punches are in the same horizontal plane. Parallel to the front edge of said table and fixed to the frame 12 is an angle-iron 27. Fixed to the rear edge of the horizontal side of said angleiron are die blocks 28 and 29. EX- tending through the die block 28 are outwardly flaring female dies 30, 3'1 and 32 which cooperate with the punches 21, 22 and 2*, respectively. Extending through the die bloclt 29 is an outwardly flaring female die 33 which is in line and cooperates with the punch and stock retainer 25. Dovetailed in the top face of said angle-iron and die block 29 is a reciprocating die block 34L tl igs. l and In the same plane with the i punches and dies, hereinbetore de scribed. is a laterally extending wire bending female die which is formed in the die block 29 and reciprocating die block 3%. In the under surface of said reciprocating die a channel 36, having oppositely inclined sides :57 and Extending through said channel and giiiided in a channel 39, which is in said angle-iron, is a reciprocating bar l0. (Figs. and 11.) The latter is pro vided with cam surtliaces l1 and 4L2 which are adapted to alternately engage the inclined sides 37 and respectively, in such a manner as to bring the face or said reciprocating do in line with the face of the die 29 when said bar is moved to the right and out of line when said bar is moved to the left. Said bar is supported by a channel iron l?) and is reci n'ocated by lugs a l, projecting 'iiipwardly from the ends of said channel iron, which alternately engage the ends of said bar. Said channel iron is pinned at 4-5 to a clain 'iing lever 4C6. The latter is provided with an opening l7, through the sides of which extend and are fixed thereto, the ends of a split spring sleeve t9 and the latter is journaled on a reciprocating rod hereinafter described. On said split spring sleeve and extending into the opening l? is pivoted a lug 51 which is formed on a ClttlTlping lever 52. Extending through said lug is a stud which is provided, on one end, with a nut and washer 54 and a cam surface 55. The latter is in engagement with said split spring sleeve and is so formed that by manipulating said nut the friction ljietween the bearing in the lug 51 and said split spring sleeve and the friction between the latter and said rod may be varied. On the upper end of the clamping lever is fixed a jaw 56 which cooperates with an edge or jaw 5'? on the channel iron Near the lower ends of the clamping levers 46 and. 52 are sockets 58 and 59. res 'iectively. Said sockets receive springs 60 which normally hold the jaws 56 and 57 closed. Extending through and fixed to two rearwardly projecting cars 61, which are near the lower edge of the lever 52 and integral tl'ierewith. is a rod 62 on which is journaled one end of an arm 63. Through a the latter is threaded a bolt 64-, one end of which is adapted to engage the lower arm of the lever Near the top edge of said arm is formed a rearwardly projecting rih 65 which is engaged by a roll 66. Said roll is journaled on a stud 67 which projects from. an arm (58. The latter is pivoted at one end on a rod (39 which is secured to the sides of the frame 12, and on the other end of said arm is journaled a cam roll 70. The latter engages a cam 71 which is fast to the main shaft 10. it will be understood from the foregoing that when the cam roll is engaged by the high part 72 of the cam. the jaws 56 and 57 will be opened thereby. and when said roll is not in engagement with said part of the cam said jaws will be closed by the springs 60.

The rod 50 which carries the clamping levers 46 and 52 passes through and is guided by suitable bearings T3 in the sides of the frame 12. On one end of said rod is mounted a bloclt T-l. which adapted to slide thereon. Bearing against one side of said block and a collar 75 fixed to said rod. is a spring 76. and bearing against the other side of said block and nuts "T? which are threaded. on the end of said rod, is a spring 78. livoted to the under side of said block is one end of an arm. '79, the other end of which is pivoted on a stud in a bracket St. Said arm is swung on said stud through a roll 82 mounted thereon and engaging a cam groove 83 in a barrel cam S-l which is fast to the main shaft 10.

Secured to the front portion of the top of the frame 1.2 is a casing 85. Bolted on the top of said casii'ig it a bracket 86 hav ing a head 87. The latter projects over the edge of said casing and its lower edge is substantially in the same horizontal plane as the top surface of an ijipwardly projecting rib 89 which is formed on the top of the wire conveying and inserting member it). Mounted in a groove 90 in said head and adapted to slide therein is a plate 91, on one side of which is fixed a plate 92, the lower edge of which projects below the lower edge of the former plate. lilush with the other side of the plate 91 and fastened to the head 87 a cover 93. The upper end of the plate 91 is provided with a slot 9t which engages and is adapted to slide on a. block 95 pivoted on an arm 96. One end of the latter is pivoted at. 97 on a bracket 98 projectil'ig upwardly from the front of the casing and on the other end of said arm is a roll 99. The latter eng s the groove in a cam 100 which is fast to the main shaft 10.

In the rear of the head 87 and leading into the groove is an aperture 101. A continuation of said aperture is the aperture in a tube 102, one end of which is fixed to said head. and the other end is supported by and secured to a stud 103 project ing upwardly from the rear end of the frame 12. In line with the center of the aperture of said tube is the point of tangency of two wire feedin g disks 104 and 10.3 which are integral with gears 106 and 107 move from the stock.

respectively. Theformer gear is journaled on an eccentric 108 which is provided with an arm 109. Said eccentric is journaled on a stud 110 which projects upwardly from the frame 12. The gear 107 is jo-urnaled on a stud 111 which projects upwardly from said frame. 011 the top of the disk 104 and integral therewith is a ratchet wheel 112. Journaled on the latter stud, between said ratchet wheel and a collar fixed to said stud, is an arm 113. Pivoted to the underside of said arm is a pawl 114 which is held in contact with said ratchetwheel by a leaf spring 115 fixed to said arm. Bearing against the hub of the gear 107 is a friction arm 116, one end of which is pivoted on the frame 12 and the other end is connected to the arm 109 by a spring 117. The arm 113 is connected to a lever 118 by a link 119. Said lever is pivoted at 120 to a bracket which projects upwardly from the frame 12 and is provided with a roll 121 which engages the cam groove in a barrel cam 122 fast to the main shaft 10. Journaled on a stud projecting downwardly from the forward end of said lever is a sleeve 123. The latter is provided with ears between which is pivoted one end of an arm 124. Said arm ex tends through a slot 125 in a hanger 126 which is fixed to the head 87, and its inner end is adapted to engage cam surfaces 127 and 128 which are formed on said head.

In the operation of the machine the jaws 56 and 57 are opened, by means hereinbefore described, and one end of the stock 8, to which the wires are to be attached, is inserted between said jaws, from their lefthand ends, until the end of said stock has just passed the punch and stock retainer 25. The arm 109 on the eccentric 108 is swung in the direction of the arrow :12, which will cause the feeding disk 104 to move away from the disk 105. One end of the wire w, to be used, is then threaded between said disks, through the tube 102, and up to the groove 101 and then the arm 109 is released which allows the periphery of the feeding disk 104 to grip the wire w together with the disk 105 (Figs. 1, 2 and 5). The cam 71 then allows the springs 60 to close the jaws 56 and 57 against the stock 8.

By the rotation of the eccentrics 15, the table 17 is moved forward which forces the punches 21, 22 and 23 and the punch and stock retainer 25 through the stock and into their dies, the latter operation occurring when the jaws 56 and 57 are carried, by the action of the cam 84, through mechanism hereinbefore described to the limit of their right-hand movement. Then said table slides back, thereby causing the punches to Immediately after the punches 21, 22 and 23 clear the stock, said jaws open and move to the left. During the latter movement of said jaws the punch and stock retainer, because of its length, does not clear the stock but retains it. This latter movement of said jaws continues until the clamping lever 46 strikes a bolt 128 which projects from the left-hand side of the frame 12, and any lost motion of the arm 79 will merely cause the block 74 to slide on the rod 69 against the spring 76. When said movement of said jaws is completed, they again grip the stock and the end of the punch and stock retainer 25 clears said stock.

As the dies 31, 32 and 33 fiare outwardly, the edges of the perforations punched in the stock will extend into said dies, so that in order for the stock to be carried by the jaws it will first have to be moved away from said dies until said edges are clear; and this is accomplished by said lateral movement and by the cam action of the flaring edges of the dies and said edges of the stock, forcing the clamping levers 46 and 52 to swing on their pivots. Said lateral movement of said jaws is terminated by the lever 52 striking a bolt 129 projecting from the side of the frame, and any lost motion of the arm 79 will merely cause the block 74 to slide on the rod 69 against the spring 78. During said lateral movement, a portion 10' of the wire 20 having been fed into the groove 90, by the cam 127 actuating the feed ing mechanism, hereinbefore described, this portion is sheared off by the plate 91, which is forced downward by the lever 96 actuated by the cam 100. Said portion of wire w is then forced down onto a groove 130 formed on the conveying and inserting member 26. It will be understood that said wire is now inclosed in a passage formed by the lower edge of the plate 91, the projecting edge of the plate- 92 and the cover 93. (Figs. 7. 8 and 9.) The wire is then forced forward by the forward end of the rib 89, hereinbefore described, which engages the rear end of the wire 10. )Vhile the stock is at rest, the forward end of said wire enters the die 35 through the perforation which has been made in said stock by the punch 22 and the die 31 and as the wire is continuously being forced forward, said end is compelled to followthe curve of said die which leads it out through the perforation which has been formed in said stock by the punch 23 and die 32. Said wire continues to be forced forward until its end has been bent around the outside of the portion of the stock between said perforations as is represented in Fig. 15. Then the end of the arm 124, which has been forced forward by the cam 122 through the lever 118, is forced down i and against said bent end portion, by the cam surfaces 27 and the cam surfaces formed on the head 87 with sufficient pressure to rigidly clamp it to the stock. (Fig. 16.) The edges of the perforation which are llt formed by the punch and the die 31 flare inwardly, as hereinbefore stated, which assists the guiding of the wire through said. perforation. it will be understood that while the con veying and inserting member is moving forward the punches ll, 29 and 23 and the dies 30, 31 and 32 are making a new set of perforations. (Fig. 10.) lVhile the table is sliding baclc, the plates 91 and 92 are returned to their upper position and the feeding mechanism feeds another portion 1.0 of the wire a: into the groove 90. After the end of the arm 12f has moved back from the wire, the jaws l6 and open and return to their original position. shown in Fig. l. and they then grip the stock preparatory to carrying it to the right to have the second wire in attached, which latter operation accomplished in the same manner as the other wire was attached. Fear the com pletion of said return movement, the reciplocating die block 8% is moved. out of contact with the attached wire to so as not to interfere with the subsequent movement of iiid stock and is returned by mechanism licreinliiefore described, when said latter movement is nearly completed. It will be understood that these *arimis operations autoimitically continue until wire has been attached to the desired length of the stock.

To prevent unnecessary jar, by the re ciprocation of the rod 50, one end of said rod may be connected to a shock absorber Having thus described our invention, we claim as new and desire to secure by Letters Patent- 1. 51 machine of the nature described, comprising punching means, wire inserting means, a positive engaging means adaptedto enter a perforation formed by a punch in the material under operation, and means for intermittently moving material to the punching position and thereafter to the wire inserting position.

machine of the nature described, comprising means for punching in the material a pair of wire receiving perforations and an additional. holding perforation, wire inserting means, means for intermittently feeding forward material to a dwell at the punching position and to subsequently present the perforated portion of said material. at the wire inserting position, and means adapted to enter said additional perforation when one of said wire receiving perforations is at the wire receiving position.

3. it machine of the character described, con'iprising material clamping and feeding means having an intermittent forward movement and a continuous return movement, punching means operating on the ma.- terial at one dwell in the forward movement thereof, holding means for entering a perforation in the material at another dwell in such forward movement, and wire inserting means operating during said last mentioned dwell.

at. A. machine of the nature described, comprising a clamp slidably mounted, means for moving forward said clamp intermittently and for effecting a continuous return movement thereof, means for opening said clamp at the limit of its forward movement, means for punching three perforations in the material, wire inserting means, a perforation engaging means with which one of said perforations is adapted to be brought into registry at the limit of said forward movement of said clamp, and means for moving said engaging means to the engaging position.

A machine of the nature described, comprising punching means, wire inserting means, wire bending means, means for positively holding the material at the wire insorting position, means operating intermittently to feed forward material to bring portions thereof to dwell both at the punching position and at the wire inserting position, and means for releasing said feeding means from the material during the operation of the wire inserting means.

6. A machine of the nature described comprising means for forming a pair of perforations in material, means for feeding forward a wire, means for cutting off a length of such wire, means for feeding forward said cut-off portion of wire through one of said perforations in the material, and means for returning the end of said wire through the other of said perforations.

7. A machine of the nature described, comprising means for forming a pair of perforations in material, means for feeding forward a wire, means for cutting off a length of said wire, means for feeding forward said cut-off portion of wire through one of the perforations in the material. means for re turning the end of said wire through the other of said perforations, and means for bending down said returned end of said wire.

8. A, machine of the nature described, comprising a rigid guiding member for guiding material through the machine, means carried by said guiding member for receiving the end of a wire and guiding the end of said wire in a return direction, wire feeding means, wire cutting means, and means for feeding forward the cut-off length of wire, substantially as described.

9. A machine of the nature described, comprising a rigid guide member, means for moving material along said member by in termittent steps, a die member fixed to said guide member, a second die member movable with respect to said guide member, wire feeding means operating toward said fixed die member, and means for moving said movable die member after said Wire feeding for returning the end of said Wire through means has reached lts hmit of forward another of sald perforations, and for bend- 10 movement. ing down the return end of said Wire.

10. A machine of the nature described, HENRY H. CUMMINGS. comprising organized means for feeding for- ANALDO M. ENGLISH. Ward a strip of metal, for punching groups Witnesses: of perforations therein, for entering a Wire ETHEL A. WATERS, into one perforation of each of said groups, HENRY J. MILLER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

